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Spigot SCAR (Silly Scar) (Half Dart and MegaXL)

A simple SCAR attachment that allows you to fire MegaXL. Attaches to standard hobby-spec 16mm OD aluminum barrels.
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updated May 21, 2025

Description

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MegaXL Spigot SCAR

 

 

The MegaXL Spigot SCAR (or Silly Scar) is a SCAR attachment for 16mm OD aluminum Nerf hobby barrels that stabilizes darts, is easy to attach and detach, is fully air-sealed, and it allows you to fire MegaXL darts off the end of your blaster! 

 

 

The scar has three parts to it: The SCAR barrel itself, a locking nut used to tighten it to the barrel, and an 016 o-ring that goes around the barrel. This o-ring is what the SCAR nut tightens against.

 

 

If you don't have an 016 o-ring, a rubber band can be used as a replacement to keep the SCAR in place. The rubber band will not provide the air seal to the SCAR, but that isn't necessary for it to function at a basic level.

There is also a part called BarrelCap, which is basically just something to put over your muzzle so you don't core-sample someone with your sharp metal barrel. It connects to the barrel the same way as the normal SCAR.

 

 

MegaXL Spigot SCAR Print Settings

Print all of the SCAR at 5 walls 20% infill. The threaded end of the SCAR faces the build plate. No supports are necessary, but a brim might be needed to print smoothly.

Make sure the Z-Seam is straight down one side of the SCAR. Otherwise, it might not launch MegaXL as nicely, and it looks bad with misaligned Z-Seams.

 

 

Sellers

These SCARs are also available pre-printed from these sellers (and more):

Misc.

If you build any of my designs, I'd love to see yours! Feel free to message me on Discord (Sillybutts#5905) or tag me on a post on Reddit (u/SillyTheGamer).

Thanks to OutOfDarts and SilverFoxIndustries for providing photos.

The thread for this collet is derived from CaptainSlug's collet on the Indra.

China: 你好! 我擁有這個設計。 想生產請聯繫我. 你好! 我拥有这个设计。 如果你想生产,请联系我.

The models marked 'Trivictus' are using remixed SCAR rifling geometry from Thanhtacles's SCAR design: https://www.thingiverse.com/thing:4967719

 

 

Donations

If you like what I do, please consider supporting me! 

I don't charge for my files, so any donations or merch purchases would be greatly appreciated!

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Model origin

The author marked this model as their own original creation.

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